n+12=18.3

解答

n + 12 = 18.3

n = 6.3

求解步骤

n + 12 = 18.3

将

12

到右边

n = 6.3

so l v e f or a, x^{3} - a x^{2} + b x - c = 0

\frac{x - 1}{2} - \frac{5 - 2 x}{3} = x

x - 5 = x

0 = \frac{3 R}{1.1} + \frac{R}{1. 1 ^{2}} + \frac{R}{1. 1 ^{3}} - 900

4 x - 3 (1 - 3 x) = - 3